Rack



FIG. 1 is a perspective view of a rack showing our new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a right side view thereof, a left side view being a mirror image of the right side view.

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines shown in the figures represent portions of the rack that form no part of the claimed design. 

CLAIM The ornamental design for a rack, as shown and described. 